<div class="dianming2">
  <div class="header">
    <div class="header-in container">大冤种提取器</div>
    <div class="countdown container"></div>
  </div>
  <div class="control">
    <div class="control-in container">
      <button class="btn-start" type="button">开始</button>
      <button class="btn-end" type="button">结束</button>
    </div>
  </div>

  <div class="control">
    <div class="control-in container">
      <button class="btn-addGroup" type="button">添加组</button>
    </div>
  </div>

  <div class="stu m-t10">
    <div class="stu-in container">
      <div class="group">
        <h3>
          第1组
          <a class="addStu" href="javascript:void(0)">添加成员</a>
          <a class="delGroup" href="javascript:void(0)">删除本组</a>
        </h3>
        <ul>
          <li class="stu-item">
            黄嘉辉
            <div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">杨韵璋<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">廖宏妃<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">张长春<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
        </ul>
      </div>
      <div class="group">
        <h3>第2组
          <a class="addStu" href="javascript:void(0)">添加成员</a>
          <a class="delGroup" href="javascript:void(0)">删除本组</a>
        </h3>
        <ul>
          <li class="stu-item">林萃<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">周志超<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">廖文静<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">刘长生<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">崔梦娇<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
        </ul>
      </div>
      <div class="group">
        <h3>第3组
          <a class="addStu" href="javascript:void(0)">添加成员</a>
          <a class="delGroup" href="javascript:void(0)">删除本组</a>
        </h3>
        <ul>
          <li class="stu-item">郭嘉辉<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">刘佳富<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">郭浩<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">周波<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">林学君<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
        </ul>
      </div>
      <div class="group">
        <h3>第4组
          <a class="addStu" href="javascript:void(0)">添加成员</a>
          <a class="delGroup" href="javascript:void(0)">删除本组</a>
        </h3>
        <ul>
          <li class="stu-item">朱永康<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">张健飞<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">王依萍<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">范声强<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
        </ul>
      </div>
      <div class="group">
        <h3>第5组
          <a class="addStu" href="javascript:void(0)">添加成员</a>
          <a class="delGroup" href="javascript:void(0)">删除本组</a>
        </h3>
        <ul>
          <li class="stu-item">刘家锦<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">苏陈凤<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">文江宜<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
          <li class="stu-item">刘国梁<div class="close-btn"><span class="iconfont icon-close"></span></div>
          </li>
        </ul>
      </div>
    </div>
  </div>

</div>